/************************************************************************
 * The code is owned by mainframer.cn and Shang Tao
 * Without aproval of mainframer.cn and Shang Tao, removing the copyright
 * infomation is regarded as invassion of proprietary copyright
 ***********************************************************************/
package com.mr.qa.dao.impl;

import java.util.Date;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Example;

import com.mr.qa.bo.Message;

public class MessageDAO extends BaseHibernateDAO {

    private static final Log log = LogFactory.getLog(MessageDAO.class);

	//property constants
	public static final String TITLE = "title";
	public static final String CONTENT = "content";
	public static final String STATE = "state";

    
    public void save(Message transientInstance) {
        log.debug("saving Message instance");
        try {
            getSession().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
    public void update(Message transientInstance) {
        log.debug("saving Message instance");
        try {
            getSession().update(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	public void delete(Message persistentInstance) {
        log.debug("deleting Message instance");
        try {
            getSession().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    public Message findById( java.lang.Integer id) {
        log.debug("getting Message instance with id: " + id);
        try {
            Message instance = (Message) getSession()
                    .get("com.mr.qa.bo.Message", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    
    public List findByExample(Message instance) {
        log.debug("finding Message instance by example");
        try {
            List results = getSession()
                    .createCriteria("com.mr.qa.bo.Message")
                    .add(Example.create(instance))
            .list();
            log.debug("find by example successful, result size: " + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }    
    
    public List findByProperty(String propertyName, Object value) {
      log.debug("finding Message instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from Message as model where model." 
         						+ propertyName + "= ? order by model.id desc";
         Query queryObject = getSession().createQuery(queryString);
		 queryObject.setParameter(0, value);
          if(this.getPageNo().intValue() > 0 && this.getRecordCount().intValue() > 0){
                  queryObject.setFirstResult((getPageNo().intValue() - 1) * getRecordCount().intValue());
                  queryObject.setMaxResults(getPageNo().intValue() * getRecordCount().intValue());
          }
                 
		 return queryObject.list();
      } catch (RuntimeException re) {
         log.error("find by property name failed", re);
         throw re;
      }
	}

	public List findByTitle(Object title) {
		return findByProperty(TITLE, title);
	}
	
	public List findByContent(Object content) {
		return findByProperty(CONTENT, content);
	}
	
	public List findByState(Object state) {
		return findByProperty(STATE, state);
	}
	
    public Message merge(Message detachedInstance) {
        log.debug("merging Message instance");
        try {
            Message result = (Message) getSession()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(Message instance) {
        log.debug("attaching dirty Message instance");
        try {
            getSession().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
    
    public void attachClean(Message instance) {
        log.debug("attaching clean Message instance");
        try {
            getSession().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
    
    public List findMessages(String fromLoginName, String toLoginName,
			Date fromDate, Date toDate, String type) {
		StringBuffer queryString = new StringBuffer("from Message as model where type = ?");
		if(fromLoginName != null && fromLoginName.length() > 0)
			queryString.append(" and model.fromUserLoginName = ?");
		if(toLoginName != null && toLoginName.length() > 0)
			queryString.append(" and model.toUserLoginName = ?");
		if(fromDate != null)
			queryString.append(" and model.postDate >= ?");
		if(toDate != null)
			queryString.append(" and model.postDate <= ?");
		queryString.append(" order by model.id desc");
		Query queryObject = getSession().createQuery(queryString.toString());
		int i = 0;
		queryObject.setParameter(i++, type);
		if(fromLoginName != null && fromLoginName.length() > 0)
			queryObject.setParameter(i++, fromLoginName);
		if(toLoginName != null && toLoginName.length() > 0)
			queryObject.setParameter(i++, toLoginName);
		if(fromDate != null)
			queryObject.setParameter(i++, fromDate);
		if(toDate != null)
			queryObject.setParameter(i++, toDate);
		if (this.getPageNo().intValue() > 0	&& this.getRecordCount().intValue() > 0) {
			queryObject.setFirstResult((getPageNo().intValue() - 1)	* getRecordCount().intValue());
			queryObject.setMaxResults(getRecordCount().intValue());
		}
		return queryObject.list();
    }
    
    
    public Long findMessagesCount(String fromLoginName, String toLoginName,
			Date fromDate, Date toDate, String type) {
		StringBuffer queryString = new StringBuffer("select count(*) from Message as model where type = ?");
		if(fromLoginName != null && fromLoginName.length() > 0)
			queryString.append(" and model.fromUserLoginName = ?");
		if(toLoginName != null && toLoginName.length() > 0)
			queryString.append(" and model.toUserLoginName = ?");
		if(fromDate != null)
			queryString.append(" and model.postDate >= ?");
		if(toDate != null)
			queryString.append(" and model.postDate <= ?");
		Query queryObject = getSession().createQuery(queryString.toString());
		int i = 0;
		queryObject.setParameter(i++, type);
		if(fromLoginName != null && fromLoginName.length() > 0)
			queryObject.setParameter(i++, fromLoginName);
		if(toLoginName != null && toLoginName.length() > 0)
			queryObject.setParameter(i++, toLoginName);
		if(fromDate != null)
			queryObject.setParameter(i++, fromDate);
		if(toDate != null)
			queryObject.setParameter(i++, toDate);
		return (Long)queryObject.list().get(0);
    }
}